Chapter 5: Probability Distributions: Discrete Probability Distributions
Quiz 4 Probability Distributions. 1. In families of three children what is the mean number of girls...
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Transcript of Quiz 4 Probability Distributions. 1. In families of three children what is the mean number of girls...
![Page 1: Quiz 4 Probability Distributions. 1. In families of three children what is the mean number of girls (assuming P(girl)=0.500)? a) 1 b) 1.5 c) 2 d) 2.5.](https://reader036.fdocuments.in/reader036/viewer/2022081007/56649db35503460f94aa2f6a/html5/thumbnails/1.jpg)
Quiz 4
Probability Distributions
![Page 2: Quiz 4 Probability Distributions. 1. In families of three children what is the mean number of girls (assuming P(girl)=0.500)? a) 1 b) 1.5 c) 2 d) 2.5.](https://reader036.fdocuments.in/reader036/viewer/2022081007/56649db35503460f94aa2f6a/html5/thumbnails/2.jpg)
1. In families of three children what is the mean number of girls (assuming P(girl)=0.500)?
a) 1b) 1.5c) 2d) 2.5
![Page 3: Quiz 4 Probability Distributions. 1. In families of three children what is the mean number of girls (assuming P(girl)=0.500)? a) 1 b) 1.5 c) 2 d) 2.5.](https://reader036.fdocuments.in/reader036/viewer/2022081007/56649db35503460f94aa2f6a/html5/thumbnails/3.jpg)
2. What is the expected return on 1 lottery ticket from a lottery with 1000 tickets each costing $2 with 1 winning prize of $1000?
a) –$2b) $0c) $2d) –$1
![Page 4: Quiz 4 Probability Distributions. 1. In families of three children what is the mean number of girls (assuming P(girl)=0.500)? a) 1 b) 1.5 c) 2 d) 2.5.](https://reader036.fdocuments.in/reader036/viewer/2022081007/56649db35503460f94aa2f6a/html5/thumbnails/4.jpg)
3. What is the expected return on 1 lottery ticket from a lottery with 1000 tickets each costing $2 with 1 winning prize of $1000 & two 2nd prizes of $500?
a) -$2b) $0c) $1d) $2
![Page 5: Quiz 4 Probability Distributions. 1. In families of three children what is the mean number of girls (assuming P(girl)=0.500)? a) 1 b) 1.5 c) 2 d) 2.5.](https://reader036.fdocuments.in/reader036/viewer/2022081007/56649db35503460f94aa2f6a/html5/thumbnails/5.jpg)
4. Compute 8C2?
a) 8b) 28c) 56d) 112
![Page 6: Quiz 4 Probability Distributions. 1. In families of three children what is the mean number of girls (assuming P(girl)=0.500)? a) 1 b) 1.5 c) 2 d) 2.5.](https://reader036.fdocuments.in/reader036/viewer/2022081007/56649db35503460f94aa2f6a/html5/thumbnails/6.jpg)
5. Which condition is not necessary for a binomial distribution?
a) Two outcomes per trial. b) Trials are independent of each other.c) Has a fixed number of trial.d) Probability changes from trial to trial.
![Page 7: Quiz 4 Probability Distributions. 1. In families of three children what is the mean number of girls (assuming P(girl)=0.500)? a) 1 b) 1.5 c) 2 d) 2.5.](https://reader036.fdocuments.in/reader036/viewer/2022081007/56649db35503460f94aa2f6a/html5/thumbnails/7.jpg)
6. What is the probability of getting 50% (or 3/6) on a T/F quiz of 6 questions by guessing?
a) 50%b) 31%c) 25%d) 10%
![Page 8: Quiz 4 Probability Distributions. 1. In families of three children what is the mean number of girls (assuming P(girl)=0.500)? a) 1 b) 1.5 c) 2 d) 2.5.](https://reader036.fdocuments.in/reader036/viewer/2022081007/56649db35503460f94aa2f6a/html5/thumbnails/8.jpg)
7. What is the probability of passing a 5-choice quiz of four questions by guessing?
a) 5%b) 10%c) 18%d) 25%
![Page 9: Quiz 4 Probability Distributions. 1. In families of three children what is the mean number of girls (assuming P(girl)=0.500)? a) 1 b) 1.5 c) 2 d) 2.5.](https://reader036.fdocuments.in/reader036/viewer/2022081007/56649db35503460f94aa2f6a/html5/thumbnails/9.jpg)
8. What is the probability of getting at least one head when flipping a coin three times?
a) 7/8b) 3/4c) 1/2d) 1/8